If it's mounted horizontally (the boom) then it's horizontally polarized. Twist it 90 degrees and you gotta vertical, but at 10-15 feet, don't count on much...either way - lol. Why horizontal for a 'spiral' antenna like this one? Beats me but I figure it cuts down on the sagging of the spirals between supports. Then again, most HF stuff under 20 meters is sort of horizontally polarized anyway.
About the 'matching'. You're right, where you tap the spirals will make a difference. But it's gonna be close to 50 ohms anyway. May not be a 'perfect' 50 ohms, but who cares, close does count.
- 'Doc
About the 'matching'. You're right, where you tap the spirals will make a difference. But it's gonna be close to 50 ohms anyway. May not be a 'perfect' 50 ohms, but who cares, close does count.
- 'Doc